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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US406808824 Feb 197610 Jan 1978Coal Industry (Patents) LimitedUnderground mine equipment
US51209351 Oct 19909 Jun 1992Method and apparatus for oil well stimulation utilizing electrically heated solvents
US52479946 Nov 199228 Sep 1993Method of stimulating oil wells
US540043021 Jan 199421 Mar 1995Method for injection well stimulation
US553985319 Jun 199523 Jul 1996Noranda, Inc.Downhole heating system with separate wiring cooling and heating chambers and gas flow therethrough
US620609324 Feb 199927 Mar 2001Camco International Inc.System for pumping viscous fluid from a well
US63184671 Dec 199920 Nov 2001Camco International, Inc.System and method for pumping and heating viscous fluids in a wellbore
US742491522 Apr 200516 Sep 2008Shell Oil CompanyVacuum pumping of conductor-in-conduit heaters